Steam or gas turbine.



PATENTED JULY 18 J. STUMPF.

STEAM OR GAS TURBINE.

APPLICATION FILED SEP TI 8. 1903.

lnvenbor": ohann Stu 67g Witnesses.-

UNITED STATES Patented July 18, 1995.

PATENT OFFICE.

GENERAL ELECTRIC C ()MPA.NY, A UORPQRATION OF NEW YORK.

SQVTEAM on ens TURBINE.

SPECIFICATION forming part of Letters Patent No. 794,898, dated July 18,1905. Application filed September 8,1903. Serial No. 172,244.

To all whom it may concern:

Be it known that I, J OHANN STUMPF, a subject of the King of Prussia,German Emperor, and a resident of 27 Rankestrasse, Gharlottenburg, nearBerlin, Kingdom of Prussia, Ger.- man Empire, have invented certain newand useful Improvements in Steam or Gas Turbines, of which the followingis an exact specification.

My invention relates to improvements in steam or gas turbines, and moreespecially to a device for regulating the steam admission of the same;and it has for purpose to provide a device by means of which it isattained that the steam admission can be regulated by means of acentrifugal pump coupled to the turbine. I attain this purpose by theconstruction illustrated in the accompanying drawings, in which.-

Figure 1 shows the turbine provided with my new device, partly insection and partly in diagrammatic view. Fig. 2 shows a modification ofpart of the device shown in Fig. 1. Fig. 3 is a sectional detail viewshowing a nozzle for admitting motive fluid to the wheelbuckets. Fig. 4shows a similar construction, wherein the nozzles are arranged ingroups.

The construction forming the object of the present invention is basedupon the fact that in the casing of the centrifugal pump a pressurearises which varies according to the velocity of the impeller. Thispressure, which occurs chiefly at the circumference of the impeller, isused, according to the present invention, for regulating the steamadmission by moving, by means of this pressure, a piston or the like,which in the well-known manner successively cuts out or inserts singlesteam-admission nozzles or groups of the same.

In the examples shown in the is the turbine proper. I: is the turbine.

c is the impeller of a centrifugal pump. (I is the casingof this pump.

represents the nozzles for the steam admission to the turbine-wheel. Thenozzles c are-connected, by means of steam-conduits f, with the cylinder7. It will be seen from the drawings that the ends otthc steam-conduitfdrawings, a shaft of this are situated in the cylinder g at differentheights.

bis a piston situated in the cylinder 9, by means of which piston thesteam-conduits f can be opened and closed. Above the cylinder g a secondcylinder 2 is arranged, in which a piston in is situated. The pistons kand It are connected to each other by the piston-rod Z. To the cylinder'2? springs or are fixed, which connect the cylinder with the cross-barm, fixed to the piston-rod Z. The springs in tend to draw thepiston-rod, with the two pistons in and h fixed to the same, upward. Thecylinder 11 is connected, by means of a pipe n, with the casing (Z ofthe centrifugal pump. The lower part of the cylinder 1' is connected, bymeans of apipe n, to a reservoir of. This reservoir 71/ is connected, bymeans of a pipe of, to the casing (Z of the centrifugal pump. itwillthus be seen that the fluid is caused td move in cycle by virtue ofthe rotation of the impeller and the parts connected therewith.

The etfect of the device is as follows: The pump-casing, as well as theupper part of the cylinder 1', is filled with a liquidi0! instance, withoil. According to the velocity with which the turbine-wheel and theimpeller c, coupled with the same, rotate a-lower or higher pressurewill prevail in the casing 11. This pressure will act upon the piston l,so that the position of this piston will be changed by the number ofrevolutions of the turbine being changed. By the position of the piston.i' being changed the position of the piston 11. will also be changed,and it is hereby attained that as soon as the number of revolutions ofthe turbine are increased the piston It is pressed downward, and therebyclosesone or, several steam-conduits f, so that the steam admission isdiminished and the number of revolutions of the turbine reduced. Thesteam enters the cylinder r through the pipe 1'. The oil which ispressed throughv between the piston land the cylinder i flows throughthe pipe n into the reservoir w and can flow back from there through thepipeyf to the centrifugal pump.

7 It will be understood that the device for closing the steam-coi'iduitsby the movement of the piston k maybe constructed in any con-- venientmanneras, for'instance, in Fig. 2 a

construction is shown in which a cylinder 1s provided, the bottom 0" ofwhich'is' stepformed- Each step is provided with one. or

Several openings, to which the steam-conduits f (shown in Fig. 1) areconnected. The openings are closed by means of valves 19, thevalve-rods-of which are provided with stops 4;, situated at differentheights. (1 is a disk to say, if the number of revolutions ofthe'turbine inereases'the piston is and the'dis'k 9, connected to the same,are'pressed downward against the effect of the spiral springs m. By thedisk q being pressed downward the several openings in the bottom 0 willgradually be closech'thereby closing the steam-.

conduits f and diminishing the steam admis sion,

In Fig .q3,- .'e' represents the nozzle-plate, containing thenozzle'orifices or passages e,

;wh-ich may be of any suitable construction.

' Motiveirifluid is supplied to these nozzles from aifluid 'eontainingchest 0 which in turn is connected by the pipes f with the cylinder g.

1* represents a row of buckets adjacent to the discharge ends of thenozzles, and r a row of buckets receiving motivefluid from thebuckets 1. As many rows of these buckets are providedas areneces sary toabstract the energy tram the motive fluid. They may all rotate, or somemay be stationary and others rotary. Fig. 4 a-similar construction isshown, except that the nozzles are arranged in groups, so that as'inglepipe f supplies fluid to two or more nozzle-passages.

1 Having thus {fully described the nature of this'in'vention, what Idesire to secure by Letters Patent of the United States is- 1. Irrasteam or gas turbine, the combination of the turbine proper with severalsteameonduits, a centrifugal" liquid'pump coupled to the turbine, acylinder connected to the liquid-pump, .a piston situated within thecylinder and acted upon by the fluid from the pumpand means for closingthe steam-conduits successively by the .Inovement'oi' said piston. 2.Ina steam or gas. turbine regulator, the combination of a turbine havinga plurality of steam-conduits, a pump actuated by said turbine, andmeans actuated by the pressure from the pump for controlling saidplurality of steam-conduits successively.

3. In asteam or gas turbine regulator, the

'combinationof a turbine, a plurality of steameonduits for said turbine,a pump actuated by said turbine, means .i'or controlling sald condu'its,and means for communicating the pres sure of the pump-casing tosaidcontrolling means for movinglt I r 4:. In a regulator for steam orgas turbines, the combinatlonof a steam-turbineea plurality ofsteam-admission conduits therefor, a centrifugal pump actuated by saidturbine, a cylinder 1n direct communication with the pumpcasing andmeans actuated by the pressure in said cylinder for controlling the flowof steam to said conduits.

5. In a regulator for steam or gas turbines,

the combination of a turbine, steam-admission conduits for said turbine,a pump actuated by the combination of a turbine, a plurality of steam-admission conduits for said turbine, a plurality of valves for controllingsaid conduits, and means for controlling said valves successively. M f

7. In a regulator for steam or gas turbines, the combination of aturbine, a plurality of steam-admission conduits for said turbine, avalve-casing, a plurality of valves in said casing for controlling saidconduits successively, and a pressure-actuated device forcontrollingsaid valves. I

8. In a regulating device for motors and engines, thecombination with arotary part driven by the motor or engine, afluid subjected to pressureand caused to move in cycle by virtue of the rotation of said part,separate conduits for conveying motive fluid to the rotary part, andmeans for causing sald fluid.

under pressure to change the quantity of the driving medium passing toand into the motor or engine by changing. the number'o'f conduits inservice. I I

9. Inaregulating device for motors and engines, the combination with arotary part driven by the motor or engine, a liquidsubjected to pressureand caused to move in cycle by virtue of the rotation of said part,separate conduits for conveying motive fluid to the rotary part, meansfor changing the quantity of the driving medium passing to and into themotor or engine bysuccessivelycutting the conduits into and out of theservice,

.and means for causing said liquid under pressure to operatesaidfirst-mentioned means.

10. In a regulating device for motors and en gines, the combination witha rotary part driven by the motor or engine, a liquid subjected topressure by virtueoi therotation of said part, a plurality ofindividualconduits for conveying motive fluid to the rotary part;

means for changing the quantityof the driv ing medlum passing to andinto, the motor or engine by cutting. the conduits into and out ofservice successively, and means for causing said liquid under pressurefirst to operate said first-mentioned means and then to return to thesaid rotary part. b v

'reeeee 11. In a regulating device for motors and en-v 'gines,-- thecombination With a rotarypart driven by the motor or engine, a liquidsub jeoted to'pressure and caused to movein cycle 1 by virtue of therotation of said part, a, pinrality of individual conduits for conveyingmotive fluid to the rotary part, means .for changing the quantity of thedriving medium I passing to and into the motor or engine by cuttingtheconduits into and out of servicesuccessively, means for causing saidliquid under pressure to operate said first-mentioned means, and a pipefor leadingthe liquid under pressure to the means mentioned in theseccom prising separate eond nits which are opened and ciosedsuccessively for ohenging' the quentity of the driving medium passing tointo the motor or engine, and meansiox ing said piston to operate saidfirst-mentioned means. i

13. win zi governing mechanism for eiastie fluid turbines, thecomhinetion of a pumpdriven by the tur' ine for creating a fluidpressureindependent of the motive fluid, the amount of which is dependent uponthe speed of the turbine, with a regulator for varying the admission ofmotive fluid to the turbines by cutting; no'a'zies into and out ofservice which is actuated dir y by the fluid from the pump and moves ifee as the pressure of the fluid from the pump rises or falls. l ntestimony whereof eve signed name to this specification in the presenceof two subscribing Witnesses,

ai'QihhNN STUMPF.

Witnesses:

lTlENRY Kinsmen W oLnnMAn Hanre.

